Loom replenishing mechanism



G. CADORETTE LOOM REPLENISHING MECHANISM June 25, 1963 2 Sheets-Shei 1Filed June 21 1961 INVENTOR GEORGE CAooRETTE.

A TTORNE Y June 25, 1963 G. CADORETTE 3,095,016

LOOM REPLENISHING MECHANISM Filed June 21, 1961 2 Sheets-Sheet 2INVENTOR. 6502s: C'ADOIZETTE.

A TTORNE Y United tat This invention relates to looms for weaving and,more particularly, to an improvement in the mechanism for controllingreplenishment of filling bobbins and removal of the tip bunch from suchbobbins.

It is a general object of the invention to provide an improved and morepositive indicating means for the bobbin replenishing mechanism whichincludes an extracting device for removing a tip bunch from bobbinsprior to transfer of said bobbins into a loom shuttle.

-It is a further object of the invention to provide the indicating meansof the extracting mechanism with an intermediate motion transferringmember for assuring positive indication for tip bunch extraction and aminimization of lost motion.

It is still a further and more specific object of the invention toprovide this mechanism with an indicating means which shall be free frominterference and which can be adapted for application to various modelsof looms.

Further objects of the invention will become apparent from the followingmore detailed disclosure.

In automatic bobbin replenishing looms, such, for example, as the typeto employ an automatic battery such as that disclosed in United StatesPatent No. 2,556,880, it is common practice in many instances to employbobbins having a finder or tip bunch wound on the end thereof. Asdisclosed in co-pending application Serial No. 1,201, filed January 8,1960, now US. Patent 3,023,788, the purpose of such a bunch is to permitautomatically functioning mechanical means to engage this bunch in apositive manner and to displace it outwardly over the end of the bobbinto be engaged by other means and to be held thereby for a period of timesufficient to permit the transfer to take place and also for the shuttleto make its initial pick through the warp so as to permit the filling tobecome interlocked in the fabric before the held end of the filling isreleased.

Satisfactory application of this mechanism has in the past beenrestricted to relatively few types of looms. This has been due mainly tothe difference in design of looms and the different mechanismsassociated therewith, which with respect to subject mechanism did notlend themselves for application thereto.

According to the instant invention a novel indicating means which formsa part of the bob-bin replenishment mechanism can now be provided whichwill permit a wider range of application and a more direct and positiveindication for actuation of the tip bunch extractor.

The present invention includes an intermediate motion transferringmember in the form of a bell crank lever suitably mounted in a bracketattached to the loom side. This bell crank lever is caused to transmitindications imparted to it by means of a Bowden wire one end of whichcontacts one arm of said lever and the other of which is attached to thetransfer mechanism of a loom Where such indications are initiated. Thesecond arm of this lever is caused to act upon a floating push rodarrangement which in turn by a camming means actuates the extractor armlever thus causing the extractor to move end- Wise over the tip of thebobbin removing the so-called tip bunch therefrom.

The invention will be described in greater detail with reference to theaccompanying figures of drawing in which: E v

FIG. 1 is a perspective view of a portion of that side of the loom wherereplenishment of spent bobbins occurs showing the invention appliedthereto;

FIG. 2 is a view of the invention as seen from the front of the loom andlooking downwardly at an angle of about 30 more or less;

FIG. 3 is a top view of the bell crank lever showing the wedge shape ofits second arm and its relationship with the floating push rodarrangement. 1

Now referring to the figures of drawing, FIG. 1 shows part of aconventional loom and its motor stand 10 to which there is attached agenerally L-shaped mounting bracket 11. Bracket 11 is provided with twogenerally juxtaposed outwardly directed studs 12 and 13. Stud 13 isadapted to receive thereon in a more or less vertical position anextractor arm lever 14 Which is caused to oscillate in a mannerhereinafter to be more fully disclosed. It is prevented from movinglengthwise on this stud by means of collar 15 positioned and secured byset screws 16 to the outer end of this stud and adjacent the hub portionof the extractor arm le'ver.

Stud 12 is adapted to receive thereon a pivotally adjustable bracketgenerally indicated by numeral 17. Bracket 17 includes a substantiallyfiat, rectangular shaped body portion 18 extending lengthwise of theloom; at each end thereof said body portion is provided with outwardlyand oppositely directed arms 19 and 20 and at right angles thereto. Arm20 of bracket 17 is provided at its outer end with an aperture 21appropriate for the reception of stud 12. This bracket is firmly held inposition and is pivotally adjustable by means of set screws 22 locatedon the outer end of this arm, which when tightened are caused to bearagainst stud 12. Arm 19 is in the form of a bolting surface to whichthere is assembled a downwardly directed generally U-shaped member 23.The U-shape of this member is formed by two outwardly di rected arms 24and 25 in spaced relationship and being provided at their free ends withaligned holes 26 (one only shown in FIGS. 1 and 2).

An intermediate motion transferring member which is in the form of abell crank lever and indicated generally by numeral 27 is adapted toassemble between arms 24 and 25 by means of a shaft 28 passing throughhole 26 of arm 24, thence through the hub portion of said lever andthence through and beyond a corresponding hole (not shown) in arm 25. Bymeans of set screws 29 provided in the hub portion of the bell cranklever 27 this member is firmly secured to shaft 28 and is caused tooscillate in a manner to be more fully explained. That portion of shaft28 which passes through and beyond arm 25 is provided thereon with aspring casing 30 which houses a torsion spring (not shown) one end ofwhich is fixed to the shaft within said casing and to the other end toarm 25 so as to cause the bell crank lever to be spring biased in acounter clockwise direction, looking from the front of the loom.

The U-shaped member 23 has at its lower side an integrally formedoutwardly directed plate-like projection as at 31 having a centrallydisposed aperture (not shown) adapted to receive and fixedly positiontherein one end of a Bowden wire casing 32. A Bowden wire 33 withincasing 32 passes through projection 31 to contact a first arm 34 of thebell crank lever 27 which is spring biased in the direction of saidwire. The opposite ends of this casing and wire are attached to thetransfer mechanism of the loom from which it receives its means ofmovement upon indication for bobbin replenishment. The bell crank lever27 includes a second Wedge shaped arm 35 which arm, upon indication forbobbin replenishment, is adapted to contact and push outwardly from theloom a floating push rod member 36. Member 36 is assembled Within acasing 37 which in turn is fixedly positioned by 3 means of set screw 38within a horizontal opening provided in a vertical, forwardly projectingplate-like member 39 integrally formed and positioned beneath the hubportion of the extractor arm lever 14.

The lower portion of the extractor arm lever 14 includes -a pair ofhorizontally extending members 40 and 41 having aligned openings throughwhich there extends a vertical shaft 42. The latter has a spring casing43 fixed to its lower end which includes a torsion spring (not shown)one end of which is fixed to the casing and the other end to the member41 thus causing shaft 42 to be urged in a clockwise direction asillustrated by the indicating arrow shown in FIG. 2. The lower end ofthe stud also includes a collar 44 fixed thereto at a location justabove member 41, the collar includes an extension 45 protrudingtherefrom which rotatably supports a roller member 46. At its upper endshaft 42 has extending horizontally therefrom a flat plate member 47.

Upon call for bobbin replenishment the Bowden wire receives itsindication from the looms transferring mechanism, said wire is caused tomove the bell crank lever a short distance whereupon the second arm ofsaid lever forces the floating push rod member outwardly making contactwith and causing the 'flat plate member 47 to move a short distance in acounter clockwise direction. This movement which in turn moves shaft 42places the roller member 46 into the path of an extractor drive cam 48that is mounted on an extension 49 of the looms cam shaft. The roller isengaged by the cam when the lay is approximately at back center and thecam is designed in such a manner and is so timed as to provide clearancefor the roller to be swung into and out of its path at that time.

As shown by the directional arrow illustrated in FIG. 1 rotation of cam48 is in a counter clockwise direction and when engaged by roller 46causes the extractor arm lever 14 to pivot. This pivoting motionactuates the extractor linkage attached to the upper portion of lever 14causing the extractor E to move endwise over the bobbin tip removing thetip bunch therefrom.

In operation an indication for bobbin replenishment is conveyed in theconventional manner through the looms transferring mechanism and theseindications are caused to act upon the Bowden wire 33. The bell cranklever being spring biased in the direction of this wire and having oneof its arms in contact with the end of said wire is caused to rotate ashort distance in a clockwise direction. Excessive movement of thislever is controlled by means of a third arm or stop member S projectingoutwardly from the hub portion of said lever and is further controllableby means of an adjusting screw 50 the head of which serves as a contactpoint for said stop member. Clockwise movement of this lever permits itssecond wedge shaped arm to contact the floating push rod member thuspushing it outwardly from the loom. The opposite end of this rodcontacts the plate member 47 causing the vertical shaft 42 to rotate adistance sufiicient to place the roller member 46 into the path of theextractor drive cam 48. The floating push rod member after performingits intended function loses contact with those members acting upon itand which it acts upon, due to the pivot- 4 ing action of the extractorarm lever, its floating design within the casing 37 and the fact thatthe bell crank levers second arm is of wedge shape and spring biased inthe opposite direction of said rod.

Loss of contact between these members permits the spring biased verticalshaft 42 to swing roller 46 out of the path of the cam after it hasperformed its intended function.

As heretofore described the roller when placed in the path of the camcauses the extractor arm lever to pivot thus transmitting this motion tothe extractor E by means of its linkage attached to the upper portion ofsaid lever and as it moves it endwise over the bobbin tip the extractorremoves the tip bunch therefrom.

While one embodiment of the invention has been disclosed, it is to beunderstood that the inventive concept may be carried out in a number ofways. This invention is, therefore, not to be limited to the precisedetails described, but is intended to embrace all variations andmodifications thereof falling within the spirit of the invention and thescope of the claims.

I claim:

1. In combination in a loom for weaving a bobbin feeding means forretaining and presenting for transfer to a loom shuttle a supply ofbobbins having filling wound thereon an end of which is wound in theform of a tip bunch adjacent the bobbin end, a tip bunch extractor, acam-follower member, camming means for moving said tip bunch extractorendwise over the end of said bobbin, an intermediate motion transferringmember, a transfer indicating means effective only on indication forbobbin replenishment upon said member, a further means effective by saidintermediate motion transfer member for moving said follower member intothe path of said camming means thus actuating said extractor to removesaid tip bunch from said bobbin end.

2. The mechanism of claim 1 wherein said intermediate motiontransferring member includes a bell crank lever spring biased in thedirection of said indicating means.

3. The mechanism of claim 2 wherein said spring biased bell crank leverincludes one arm in spring contact with said indicating means, and asecond arm effective only References Cited in the file of this patentUNITED STATES PATENTS 1,321,275 Barrell Nov. 11, 1919 2,510,348 PetersonJune 6, 1950 FOREIGN PATENTS 1,240,371 France June 25, 1960

1. IN COMBINATION IN A LOOM FOR WEAVING A BOBBIN FEEDING MEANS FORRETAINING AND PRESENTING FOR TRANSFER TO A LOOM SHUTTLE A SUPPLY OFBOBBINS HAVING FILLING WOUND THEREON AN END OF WHICH IS WOUND IN THEFORM OF A TIP BUNCH ADJACENT THE BOBBIN END, A TIP BUNCH EXTRACTOR, ACAM FOLLOWER MEMBER, CAMMING MEANS FOR MOVING SAID TIP BUNCH EXTRACTORENDWISE OVER THE END OF SAID BOBBIN, AN INTERMEDIATE MOTION TRANSFERRINGMEMBER, A TRANSFER INDICATING MEANS EFFECTIVE ONLY ON INDICATION FORBOBBIN REPLENISHMENT UPON SAID MEMBER, A FURTHER MEANS EFFECTIVE BY SAIDINTERMEDIATE MOTION TRANSFER MEMBER FOR MOVING SAID FOLLOWER MEMBER INTOTHE PATH OF SAID CAMMING MEANS THUS ACTUATING SAID EXTRACTOR TO REMOVESAID TIP BUNCH FROM SAID BOBBIN END.